Swift Polymorphism Tutorial LionCubs

ViewController.swift

//
//  ViewController.swift
//  LionsAndTigers
//
//  Created by Timothy Jacobs on 10/18/14.
//  Copyright (c) 2014 Iron Bound Designs. All rights reserved.
//

import UIKit

class ViewController: UIViewController {
    
    // background image
    @IBOutlet weak var myImageView: UIImageView!

    // labels
    @IBOutlet weak var nameLabel: UILabel!
    @IBOutlet weak var ageLabel: UILabel!
    @IBOutlet weak var breedLabel: UILabel!
    @IBOutlet weak var factLabel: UILabel!
    
    // holds the tigers in this project
    var tigers:[Tiger] = []
    
    // hold the lions in this project
    var lions:[Lion] = []
    
    var currentAnimal = (species: "Tiger", index: 0)
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        var firstTiger = Tiger(age: 3, name: "Tigger", breed: "Bengal",
            image: UIImage(named: "BengalTiger.jpg")!)
            
        var secondTiger = Tiger(age: 2, name: "Tigress", breed: "Indochinese Tiger",
            image: UIImage(named: "IndochineseTiger.jpg")!)
        
        var thirdTiger = Tiger(age: 4, name: "Jacob", breed: "Malayan Tiger",
            image: UIImage(named: "MalayanTiger.jpg")!)
    
        var fourthTiger = Tiger(age: 5, name: "Spar", breed: "Siberian Tiger",
            image: UIImage(named: "SiberianTiger.jpg")!)
    
        
        tigers += [firstTiger, secondTiger, thirdTiger, fourthTiger]
        loadTigerToView(firstTiger)
    
        var lion = Lion(age: 4, isAlphaMale: true,
            image: UIImage(named: "Lion.jpg")!,
            name: "Mufasa", subspecies: "West African")
        
        var lioness = Lion(age: 3, isAlphaMale: false,
            image: UIImage(named: "Lioness.jpeg")!,
            name: "Sarabi", subspecies: "Barbary")
        
        lions += [lion, lioness]
        
        var lionCub1 = LionCub(age: 1, isAlphaMale: true,
            image: UIImage(named: "LionCub1.jpg")!,
            name: "Simba", subspecies: "Masai")

        var lionCub2 = LionCub(age: 1, isAlphaMale: false,
            image: UIImage(named:"LionCub2.jpeg")!,
            name: "Nala", subspecies: "Transvaal")
        
        lions += [lionCub1, lionCub2]
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBAction func nextBarButtonItemPressed(sender: UIBarButtonItem) {
        // advance to the next animal, switching between lions, and tigers
        updateAnimal()
        updateView()
    }
    
    private func updateAnimal() {
        // switch species, then grab a random animal of that species
        
        switch currentAnimal {
        case ("Tiger", _):
            let randIndex = Int(arc4random_uniform(UInt32(lions.count)))
            currentAnimal = ("Lion", randIndex)
            
        default:
            let randIndex = Int(arc4random_uniform(UInt32(tigers.count)))
            currentAnimal = ("Tiger", randIndex)
        }
    }
    
    private func updateView() {
        if currentAnimal.species == "Tiger" {
            loadTigerToView(tigers[currentAnimal.index])
        } else if currentAnimal.species == "Lion" {
            loadLionToView(lions[currentAnimal.index])
        }
    }
    
    private func loadTigerToView(tiger: Tiger) {
        // display a tiger's info on the screen
        
        UIView.transitionWithView(self.view, duration: 2,
            options: UIViewAnimationOptions.TransitionCrossDissolve,
            animations: {
                
                self.myImageView.image = tiger.image
                self.nameLabel.text = tiger.name
                self.ageLabel.text = "\(tiger.age)"
                self.breedLabel.text = tiger.breed
                self.factLabel.text = tiger.randomFact()
                
            }, completion: {
                (finished: Bool) -> () in
        })
    }
    
    private func loadLionToView(lion: Lion) {
        // display a lion's info on the screen
        
        UIView.transitionWithView(self.view, duration: 2,
            options: UIViewAnimationOptions.TransitionCrossDissolve,
            animations: {
                
                self.myImageView.image = lion.image
                self.nameLabel.text = lion.name
                self.ageLabel.text = "\(lion.age)"
                self.breedLabel.text = lion.subspecies
                self.factLabel.text = lion.randomFact()
                
            }, completion: {
                (finished: Bool) -> () in
        })
    }

}